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Signatures of light-induced conical intersections on the dynamical properties of molecular systems

I-06

Signatures of light-induced conical intersections on the dynamical properties of molecular systems


Ágnes Vibók1,2

1Department of Theoretical Physics, University of Debrecen, H-4010 Debrecen, PO Box 5, Hungary

2e-mail: vibok@phys.unideb.hu

Nonadiabatic effects are ubiquitous in physics, chemistry and biology. They are strongly amplified by conical intersections (CIs) which are degeneracies between electronic states of triatomic or larger molecules. A few years ago it has been revealed that CIs in molecular systems can be formed by laser light even in diatomics [1]. The energetic and internuclear positions of these light-induced conical intersections (LICIs) are depend on the laser frequencies while the strength of their nonadiabatic couplings can be modified by the field intensities. Strong impact of these LICIs on different dynamical properties of the diatomics has been discussed in several papers [1,2,3]. Recently our attention is focused on the description of the photodissociation dynamics of the D2+ molecule [4,5,6]. Kinetic energy release (KER) and angular distribution of the photodissociation probabilities are calculated with and without LICIs for different values of laser parameters. By analyzing this dynamical process carefully, we found a robust effect in the angular distribution of the photofragments which serves as a direct signature of the LICI providing undoubted evidence for its existence [7].

References:

[1] M. Sindelka, N. Moiseyev, and L. S. Cederbaum, J. Phys. B 44, 045603 (2011).

[2] G. J. Halász, Á. Vibók, M. Sindelka, N. Moiseyev, and L. S. Cederbaum, J. Phys. B 44, 175102 (2011).

[3] G. J. Halász, M. Sindelka, N. Moiseyev, L. S. Cederbaum, and Á. Vibók, Phys. Chem. A 116, 2636 (2012).

[4] G. J. Halász, Á. Vibók, H.-D. Meyer, and L. S. Cederbaum, JPC A 117, 8528 (2013).

[5] G. J. Halász, Á. Vibók, N. Moiseyev, and L. S. Cederbaum, PRA 88, 043413 (2013).

[6] G. J. Halász, A. Csehi, Á. Vibók, and L. S. Cederbaum, JPC A 118, 11908 (2014).

[7] G. J. Halász, Á. Vibók, and L. S. Cederbaum, JPC Lett. 6, 348 (2015).